Adapter for pump couplings



Feb. 19 1924.

i '1,484,342 M.` C. SCHWEINERT ADAPTER vFon Puuzcournmeis original FiledApril 5.' 1919 wir L @gigli V y i l uw T'OR 'f l 1 By Attorneys.-

Patented Feb. .19, 1924.

wirr.

mxmILIAN CHARLES scHwnINEnr, or NEW YORK, N. Y.

AnArrnR non PUMP CoUrLINGs.

Application led April 5,A 1919, Serial No. 287,820.v Renewed July14,1921. Sf'erial No. 484,819.

To all whom t may concern.:

Be it known that I, MAXIMILIAN CHARLES SOHWEINERT, a citizen of theUnited States of America, residing in New York,-in the county of NewYork and State of New York, have invented certain new and usefulImprovements in Adapters for Pump Couplings, of which the followingcation.

This invention relates to pump couplings and aims-to providecertainimprovements therein. f

In the type of pump coupling set forth in the patentto Mp0. Schweinert,1,297,741, patented March 18, 1919, there is provided a gauge seat atthe top .of the coupling which is adapted to receive a pressure gaugefor determining the pressure within theI tire during the operation' ofinlating. VA `pin isprovided which extends to the top of the coupling,which pincarries a valve designed to normally closel the opening throughthe top and also has a downward extension which is adapted to depressthe pin of the tire valve. The result of this construction is that whenthe gauge is pressed down on the gauge seat, it automatically opens thevalve and simultaneously depresses thevalve pin so that air may lowupthrough the coupling to the gauge. ,Y The present invention, in itspreferre form, -is directed to a coupling of this type,

v and it provides an adapter capable of being pean type. l

adapter comprises a member having an secured to the bottom ofV the'coupling andV which enables the device .to be used on a different typeof valve, such as the Euro- In the preferred form, the

' upper screw-thread similar to the thread of the American type ofvalve. This enables 4the member to screw in the bottom of the pumpcoupling which is primarily con-V structed to fit the American valve.The lower part of the adapter may be differently screw-threaded in orderto fit another type of valve, such as the European type. `Carried in theadapter is a pin which is longitudinally movable, the upper end of thepin being designed to be engaged by the coupling pin just described, andthe lower part oi the pin being adapted to enter a valve of dierent typeand depressthe deiiatng pin of such valve. The result of thisconstruction is that when the adapter is in place, the coupling may beused for infiating through a European valve, and the pressure is aspecifimay be ascertainedgin the same manneras d illuscoupling andadapter Acombined Aand shown `as in engagement with a Europeantypeofvalve.' l

Referring tothe drawings, let -A indicate the pump coupling as aY whole,Vthe branch B of which'is adapted for connectiontoapump, and the foot CVof'which is adapted for connection to the standard American tire valve.At the top is arranged a gauge seat D upon which an ordinary pressuregauge can be pressedto make a tight joint with the coupling. Within thevertical portion of the l coupling is arranged a pin E carrying a valveF, which engages a seatV Gr,the pin also being provided vwith anextension H, the lower end of which is adapted to engage the `delatingpin of the tire valvestructure.

When the gauge is pressed down on` the seat, it. depresses the Vpin E,thus opening the valve F and depressing the deatingpin of the valve. Airthen liows'from the valve to the gaug"'e., e' f f e f l Y In theconstruction of coupling shown, the latter is provided with a swivelledcollar I which is screw-threaded to engage the valve casing, a packing Lbeing provided to con- 1 tact with the top of the valve casing.

The collar I is threaded to normally engage a standard American valve,and the lpin H is of such dimensions and projection as to normallyengage the vdeflating pin of such valve. These proportions are such thatthe coupling is not operative with the common English type of valveshown at M.V

For the purpose of fitting the American coupling to the English valve Iprovide an adapter N, the preferred form of which is illustrated in thedrawings. Such adapter comprises a cylindrical'member having at itsupper end a screw-threaded extension O, the external thread of which isadapted to lit the threads of the collar I, The cylinder isy loo alsointeriorly screw-threaded at its lower end, asshown at P, a thread beingadapted to fit the exterior thread of the nipple of the European type ofvalve M. Within the adapter is arranged a supplemental pin Q which iscapable of a longitudinal movement in the adapter, which pin Q isprovided tor the purpose of depressing the de'lating pin R of the valveM. Normally it rests lightly upon the top of the delatingl pin R. Butwhen a gauge is applied to the seat D, motion is communicated by the pinE to the pin Q, and thence to the deflating pin Rf. This opens the valveM and permits air to pass upwardly to the gauge. Means are preferablyprovided for maintaining the pin Q in place within the adapter, themeans shown comprising an enlarged portion iitting within a recess inthe adapter which permits the necessary vlongitudinal movement of thepin and which nevertheless prevents escape o the pin. Y The inventionalso comprises a novel construction which permits the packing inv theadapter (lettered T) to be forced to la seat on the top of the valve Mwithout destructive distortion of the packing. rlhe means shown yforthis purpose comprises 4a cylindrical member U carried within theadapter, the upper part of which is'designed to contact with the usualpacking L and the lower part of which carries the packing T. rlhe lowerpart of the cylindrical member U is best formed with a flange W havingan annular recess on its lower face in which the packing- T is carried.rlhis flange is located within a recess X which permits the flange, andhence the entire member, to move Vlongitudinal-ly in the adapter. It isprevented from escape in one direction by the flange contactingv withthe top of the recess X, and in the opposite direction by the packingcontacting with the bottom of the recess.

The result of thisV construction is that the cylindrical member ishelolloosely in the incapaz' adapter until the coupling is attached tothe valve M and the packing T engages the top of the valve. ``Nhereuponthe cylindrical member U is tightened between the two packings withoutAnecessary rotary movement, the parts l and N swivelling around thecylindrical member until the latterV is tightly engaged between thecoupling body and the valve, When this construction is adopted therecess within which works the portion S of the pin Q, may beconveniently made in the cylindrical member.

lWhile l have shown and described one form of the invention, it will beunderstood that the invention is not limited thereto, since variouschanges can be made/therein without departing from the spirit of theinvention.

What l claim is Y l. An adapter comprising a member having an externallythreaded portion adapted to engage the threads of alpump coupling,

andan internally threaded portion adapted to engage the threads on avalve Vstem different :trom those adapted to receive the pump coupling,a tubular element within said member and-rotatively connected therel tovand a packing gasket carried by said'tubular element adapted to make aleak-tight joint with the end of a valve stem.V

Y 2. An adapter comprising a member having an externally threadedportion adapted to engage the threads of a pump coupling, and aninternally threaded portion adapted to engage the threads on a valvestem different from those adapted to receive the pump coupling, vatubular lelement within said member and rotatively connected thereto, apacking gasket carried by said tubular element adapted to make aleak-,tight joint with the end of a yvalve stem and afreciprocable pinwithin said tubular element.

In witness whereof, I have' hereunto signed my name.

l MXlIVlLlAN CHARLESv SCHWElNElW,

